Home / 115,730.90-173,769.15-80,825.30

Finding the Fourth Proportional to 115,730.90, 173,769.15 and 80,825.30

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Solution

The fourth proportional to 115,730.90, 173,769.15 and 80,825.30 is: 121,358.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,730.90 : 173,769.15 = 80,825.30 : x
  2. Step 2: Convert to fraction form
    115,730.90/173,769.15 = 80,825.30/x
  3. Step 3: Cross multiply
    115,730.90x = 173,769.15 × 80,825.30
  4. Step 4: Simplify right side
    115,730.90x = 14,044,943,679.50
  5. Step 5: Solve for x
    x = 14,044,943,679.50/115,730.90
  6. Step 6: Final answer
    x = 121,358.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.